Your sine wave may be oscillating near zero, but with low amplitude, unlike the square/sawtooth which may jump from -MAX to +MAX. Look at the actual numerical range of your sine wave table. Compare max/min values with those of the square/sawtooth.
Your sine wave may be oscillating near zero, but with low amplitude, unlike the square/sawtooth which may jump from -MAX to +MAX. Look at the actual numerical range of your sine wave table. Compare max/min values with those of the square/sawtooth.